How to style an element, knowing its ID?

function getButton(el) { //here el is the specific button that was pressed and passed to the function $('i', $(el)).addClass('fa fa-circle-o-notch fa-spin'); //or $(el).find('i').addClass('fa fa-circle-o-notch fa-spin'); //or $(el).children('i').addClass('fa fa-circle-o-notch fa-spin'); //so all will be applied to the element i specific the button is pressed }

namely the one on which the click event.

\r<!-- Убрать скобки и параметр, если там только this. Лишнее -->

function getButton(event) { // in parameter to be passed the click event // this will reference the DOM element on which the event occurred $(this).addClass('fa fa-circle-o-notch fa-spin'); }

function getButton(el) { id = el.id; $(el).addClass('fa fa-circle-o-notch fa-spin'); }